Drug profile

The FDA adverse-event record for Alprazolam

418 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Alprazolam. See the species affected, top reactions, and outcomes below.

418
adverse-event reports
7.9%
death-coded share
Dog
most-reported species
72
Vomiting - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
418
Total Reports
33
Deaths Reported
7.9%
Death Rate

Active Ingredients

Alprazolam

Administration Routes

OralUnknownIntramuscular

Species Affected

Dog 382
Human 19
Cat 16
Unknown 1

Most Affected Breeds

Retriever - Labrador 51
Crossbred Canine/dog 23
Chihuahua 23
Unknown 20
Shih Tzu 16
Terrier - Yorkshire 12
Shepherd Dog - German 12
Retriever - Golden 9
Domestic Shorthair 9
Terrier (unspecified) 9

Most Reported Reactions

Vomiting 72
Lethargy (see also Central nervous system depression in 'Neurological') 53
Emesis 47
Lack of efficacy - NOS 43
Anxiety 36
Diarrhoea 34
Seizure NOS 30
Other abnormal test result NOS 25
Elevated alanine aminotransferase (ALT) 24
Death by euthanasia 24
Anorexia 21
Elevated serum alkaline phosphatase (SAP) 20

Outcome Breakdown

Recovered/Normal
142 (34.1%)
Outcome Unknown
115 (27.6%)
Ongoing
112 (26.9%)
Euthanized
23 (5.5%)
Recovered with Sequela
14 (3.4%)
Died
10 (2.4%)

Alprazolam Adverse Event Insights

418 reports name Alprazolam; 33 recorded a death outcome (7.9% of reported events, not a population-level mortality rate). Active ingredient: Alprazolam. Administration routes: Oral, Unknown, Intramuscular.

By species: Dog (382 reports), Human (19 reports), Cat (16 reports). By breed: Retriever - Labrador (51), Crossbred Canine/dog (23), Chihuahua (23).

Leading clinical signs: Vomiting (72), Lethargy (see also Central nervous system depression in 'Neurological') (53), Emesis (47), Lack of efficacy - NOS (43). Outcome, 416 coded reports: Recovered/Normal leads at 34.1%.

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.